| abstract |
A compound useful as an NK receptor antagonist is provided. Formula (I) [Chemical 1] [Where: A represents a benzene ring which may have a substituent, R represents a hydrogen atom, a hydrocarbon group which may have a substituent, etc., X1 and X2 each represent a bond, X3 represents a methylene group having a substituent, Y represents a bond or the like, and Z represents a hydrocarbon group which may have a substituent. Or a salt thereof. |